--- product_id: 70011705 title: "iSpring US31 Under Sink Water System, NSF Certified 3-Stage Water Filters, Reduces PFAS, Chloramine, Chlorine and More, Tankless Water Filter System with Faucet" brand: "ispring" price: "8706625₫" currency: VND in_stock: true reviews_count: 13 category: "I Spring" url: https://www.desertcart.vn/products/70011705-ispring-us31-under-sink-water-system-nsf-certified-3-stage store_origin: VN region: Vietnam --- # Tankless, no electricity needed 3-stage filtration tech Up to 1 GPM flow rate iSpring US31 Under Sink Water System, NSF Certified 3-Stage Water Filters, Reduces PFAS, Chloramine, Chlorine and More, Tankless Water Filter System with Faucet **Brand:** ispring **Price:** 8706625₫ **Availability:** ✅ In Stock ## Summary > 🚰 Elevate your hydration game with sleek, smart, and spotless water! ## Quick Answers - **What is this?** iSpring US31 Under Sink Water System, NSF Certified 3-Stage Water Filters, Reduces PFAS, Chloramine, Chlorine and More, Tankless Water Filter System with Faucet by ispring - **How much does it cost?** 8706625₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/70011705-ispring-us31-under-sink-water-system-nsf-certified-3-stage) ## Best For - ispring enthusiasts ## Why This Product - Trusted ispring brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Pure Power Trio:** Triple-layer filtration crushes PFAS, chloramine & chlorine for crystal-clear water. - • **Space-Savvy Design:** Tankless system fits snugly under your sink—no bulky tanks stealing your cabinet real estate. - • **Effortless Elegance:** European brushed nickel faucet + clear housing for instant filter health check—style meets function. - • **Flow Without Limits:** Delivers up to 1 gallon per minute on demand—20x faster than typical pitchers, zero wasted water. - • **Plug & Play Peace of Mind:** Install in 15 minutes with all parts included, backed by lifetime US-based support. ## Overview The iSpring US31 is a NSF-certified, 3-stage under-sink water filtration system that removes sediments, heavy metals, chloramine, chlorine, and PFAS without stripping healthy minerals. Featuring a tankless design and a European-style brushed nickel faucet, it delivers up to 1 GPM flow rate on demand. Easy to install and maintain, it’s engineered for durability and backed by lifetime US support, making it a top-tier choice for clean, fresh drinking water. ## Description Product description Easy replacements Does this system require electricity to operate? No, the US31 under-sink water filtration system does not require electricity. It works on water pressure alone. Does this system require electricity to operate? No, the US31 under-sink water filtration system does not require electricity. It works on water pressure alone. How much water pressure is required for it to work? The feed water pressure should be: 30-70 psi How much water pressure is required for it to work? The feed water pressure should be: 30-70 psi How long do the filters last before needing replacement? The filters should be replaced every 6 to 12 months, depending on usage and water quality. This ensures optimal performance and water quality. How long do the filters last before needing replacement? The filters should be replaced every 6 to 12 months, depending on usage and water quality. This ensures optimal performance and water quality. Will it reduce TDS? No, this under-sink water filtration system does not reduce TDS levels. Instead, it maintains the TDS of the incoming water, preserving essential minerals. If TDS reduction is necessary, we recommend considering an iSpring reverse osmosis system. Will it reduce TDS? No, this under-sink water filtration system does not reduce TDS levels. Instead, it maintains the TDS of the incoming water, preserving essential minerals. If TDS reduction is necessary, we recommend considering an iSpring reverse osmosis system. Replacement filters FP15 FG15 FC15 F3 Review: Want Clean And Safe Drinking Water? Then this iSpring System is your answer! - We’ve been searching for a 3-Stage Filter System for a while now. With having limited cabinet space under our kitchen sink area we didn’t want a larger tank system. We’ve owned a iSpring spin down whole home sediment filter for years now and it has worked out perfectly for us. Plus iSpring’s customer service is hands down the best so it was a no brainer for us to strongly consider their product options while researching. In the end, we picked this iSpring 3 Stage Water Filtration System because of their strong reputation for quality made products, outstanding customer service, providing piece of mind and their real NSF / ANSI 58 Certified Water Filters all topped our list. Other great things about this system are that it requires No Electricity, provides a High Continuous Flow Rate without any wasted water going down the drain. Plus it has No Bulky Tank taking up more valuable space under your cabinet. The installation was very fast, effortless and simple. They have produced à great installation video that shows how to complete each simple step. It was so easy that my wife could had installed it by herself. From start to finish I had the unit completely installed and operating in only about 15 mins. They include everything you’ll possible need to complete the installation. Right out of the box you will feel, see and discover this systems superior engineered quality. It’s packed very well and they have designed every component with dependability, performance, ease of use and a long service life in mind. The faucet is absolutely beautiful and it operates very smoothly. It fit directly and perfectly right into one of the factory pre drilled holes in our Kitchen Sink. Plus it can also be easily installed and tightened from above your sink or counter top also. iSpring has truly thought of everything! We also love how well the filter unit fits under our cabinet. Best of all we love how much better tasting and safer our drinking water is now! The price is great when compared to the other brands. So save yourself time, prevent future headaches, protect your Family’s Health and order à iSpring 3-Stage Water Filter System for your home today. Honestly, I would give it 10 Stars if I could! Review: Great water filter system and easy to install - I installed the iSpring US31 under-sink water filter system recently and have been very happy with it so far. The installation was surprisingly easy, and the package came complete with all the hardware, tubing, faucet, and filters needed to get everything set up. The instructions were clear, and the overall build quality feels solid. After installation, the water tasted noticeably cleaner and fresher right away. It’s a great system if you want better drinking water without dealing with large countertop filters or bottled water. Overall, a very good value and a well-designed kit. ## Features - 【NSF 58 Standard Purification】 : Tested by independent third parties against NSF/ANSI 58 standards. The PP, GAC, and CTO triple-filtration stack removes heavy metals, chlorine, sediment, and odors for elite-level safety. - 【10,000-Gallon Ultra Capacity】: Built for long-term performance with a filter life of up to 12 months. Enjoy high-quality water year-round with fewer replacements and lower maintenance costs. - 【20x Faster Flow Rate】: Delivers an on-demand flow of 1 GPM—20 times faster than standard water pitchers. Perfect for instant drinking, washing produce, or filling large pots without the wait. - 【Patented Above-Counter Installation】： No more struggling under the sink! The top-mounted fastener allows you to secure the faucet entirely from above the countertop, making installation fast and hassle-free. - 【Smart Visibility & Premium Finish】： Features a high-quality brushed nickel faucet and a transparent 1st-stage housing, allowing for easy visual filter inspections at a glance. - 【Fresh Mineral Taste】: Deeply purifies while retaining essential natural minerals. Delivers a crisp, refreshing taste similar to high-end bottled mineral water. (Note: Does not reduce TDS; for scale removal, choose iSpring RO systems). - 【U.S.-Based Expert Support】: Includes a 1-year manufacturer warranty and lifetime technical support from our dedicated team in Atlanta, GA. Reliable quality and service you can trust. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07CHXVRS5 | | Best Sellers Rank | #4,880 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #10 in Under-Sink & Countertop Filtration | | Brand | iSpring | | Brand Name | iSpring | | Capacity | 10000 Gallons | | Container Type | Bottle | | Customer Reviews | 4.5 out of 5 stars 1,957 Reviews | | Filter Life Cycle | 12 Months | | Global Trade Identification Number | 00662425095681 | | Included Components | housings, filters, parts and tubings, faucet and mounting bracket | | Installation Type | Under Sink | | Item Dimensions L x W x H | 13"L x 5.3"W x 14.2"H | | Item Type Name | Water Filtration System | | Item Weight | 5.45 Kilograms | | Manufacturer | iSpring Water Systems | | Material | Combination of materials | | Material Type | Combination of materials | | Maximum Flow Rate | 1 Gallons Per Minute | | Model Name | US31 | | Model Number | US31 | | Other Special Features of the Product | Multi Stage Filtration, Portable, Heavy Duty, Leak-Proof | | Part Number | US31 | | Power Source | Ac | | Product Dimensions | 13"L x 5.3"W x 14.2"H | | Purification Method | 3 Stage. Chemical Absorption and Mechanical Filtration | | Special Feature | Multi Stage Filtration, Portable, Heavy Duty, Leak-Proof | | UPC | 662425095681 | | Unit Count | 1.0 Count | | Upper Temperature Rating | 100 Degrees Fahrenheit | | Warranty Description | 1 Year Manufacturer | | Water Saving Percentage | 100.0 | ## Product Details - **Brand:** iSpring - **Capacity:** 10000 Gallons - **Included Components:** housings, filters, parts and tubings, faucet and mounting bracket - **Installation Type:** Under Sink - **Material:** Combination of materials - **Package Information:** Bottle - **Power Source:** Ac - **Product Dimensions:** 13"L x 5.3"W x 14.2"H - **Purification Method:** 3 Stage. Chemical Absorption and Mechanical Filtration - **Special Feature:** Multi Stage Filtration, Portable, Heavy Duty, Leak-Proof ## Images ![iSpring US31 Under Sink Water System, NSF Certified 3-Stage Water Filters, Reduces PFAS, Chloramine, Chlorine and More, Tankless Water Filter System with Faucet - Image 1](https://m.media-amazon.com/images/I/713QljolxML.jpg) ![iSpring US31 Under Sink Water System, NSF Certified 3-Stage Water Filters, Reduces PFAS, Chloramine, Chlorine and More, Tankless Water Filter System with Faucet - Image 2](https://m.media-amazon.com/images/I/61qPSFUZz1L.jpg) ![iSpring US31 Under Sink Water System, NSF Certified 3-Stage Water Filters, Reduces PFAS, Chloramine, Chlorine and More, Tankless Water Filter System with Faucet - Image 3](https://m.media-amazon.com/images/I/71sc-hpq1+L.jpg) ![iSpring US31 Under Sink Water System, NSF Certified 3-Stage Water Filters, Reduces PFAS, Chloramine, Chlorine and More, Tankless Water Filter System with Faucet - Image 4](https://m.media-amazon.com/images/I/71PYbx+krNL.jpg) ![iSpring US31 Under Sink Water System, NSF Certified 3-Stage Water Filters, Reduces PFAS, Chloramine, Chlorine and More, Tankless Water Filter System with Faucet - Image 5](https://m.media-amazon.com/images/I/716mrtS3-6L.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: Does this system require electricity to operate?** A: No, the US31 under-sink water filtration system does not require electricity. It works on water pressure alone. **Q: How much water pressure is required for it to work?** A: The feed water pressure should be: 30-70 psi **Q: How long do the filters last before needing replacement?** A: The filters should be replaced every 6 to 12 months, depending on usage and water quality. This ensures optimal performance and water quality. **Q: Will it reduce TDS?** A: No, this under-sink water filtration system does not reduce TDS levels. Instead, it maintains the TDS of the incoming water, preserving essential minerals. If TDS reduction is necessary, we recommend considering an iSpring reverse osmosis system. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Want Clean And Safe Drinking Water? Then this iSpring System is your answer! *by B***G on February 20, 2026* We’ve been searching for a 3-Stage Filter System for a while now. With having limited cabinet space under our kitchen sink area we didn’t want a larger tank system. We’ve owned a iSpring spin down whole home sediment filter for years now and it has worked out perfectly for us. Plus iSpring’s customer service is hands down the best so it was a no brainer for us to strongly consider their product options while researching. In the end, we picked this iSpring 3 Stage Water Filtration System because of their strong reputation for quality made products, outstanding customer service, providing piece of mind and their real NSF / ANSI 58 Certified Water Filters all topped our list. Other great things about this system are that it requires No Electricity, provides a High Continuous Flow Rate without any wasted water going down the drain. Plus it has No Bulky Tank taking up more valuable space under your cabinet. The installation was very fast, effortless and simple. They have produced à great installation video that shows how to complete each simple step. It was so easy that my wife could had installed it by herself. From start to finish I had the unit completely installed and operating in only about 15 mins. They include everything you’ll possible need to complete the installation. Right out of the box you will feel, see and discover this systems superior engineered quality. It’s packed very well and they have designed every component with dependability, performance, ease of use and a long service life in mind. The faucet is absolutely beautiful and it operates very smoothly. It fit directly and perfectly right into one of the factory pre drilled holes in our Kitchen Sink. Plus it can also be easily installed and tightened from above your sink or counter top also. iSpring has truly thought of everything! We also love how well the filter unit fits under our cabinet. Best of all we love how much better tasting and safer our drinking water is now! The price is great when compared to the other brands. So save yourself time, prevent future headaches, protect your Family’s Health and order à iSpring 3-Stage Water Filter System for your home today. Honestly, I would give it 10 Stars if I could! ### ⭐⭐⭐⭐⭐ Great water filter system and easy to install *by A***W on May 13, 2026* I installed the iSpring US31 under-sink water filter system recently and have been very happy with it so far. The installation was surprisingly easy, and the package came complete with all the hardware, tubing, faucet, and filters needed to get everything set up. The instructions were clear, and the overall build quality feels solid. After installation, the water tasted noticeably cleaner and fresher right away. It’s a great system if you want better drinking water without dealing with large countertop filters or bottled water. Overall, a very good value and a well-designed kit. ### ⭐⭐⭐⭐⭐ Great Customer Service *by S***Y on May 8, 2026* I love this water system. It was easy to install and the replacement filters are affordable. The quality and taste of the water is excellent. I have had this system for over a year and it has been easy to maintain and keeps delivering consistent quality water and water pressure. I am also very impressed with the company and customer service. When I called to ask a question about a small leak, Sean answered the phone, I was stunned to get a person immediately. He answered all my questions and offered me a quick solution to my problem. He followed up with and email about our conversation and made sure that my problem was resolved. I was so impressed that I wish there were more people like Sean and more companies like Ispring out there. They definitely set a high standard on quality products and customer service!! That's rare in todays world!! ## Frequently Bought Together - iSpring US31 Classic 3-Stage Under Sink Water Filtration System for Drinking, Tankless, High Capacity, Sediment + GAC + Carbon - iSpring F7-GAC NSF Certified 1-Year Replacement Filter Cartridge Pack, 7-Count for Standard 5-Stage Reverse Osmosis (RO) Systems - iSpring FA15 Alkaline Inline Water Filter Cartridge, 10” x 2” with 1/4” Quick Connect, NSF Certified, Add-on for RO Systems, Balances pH & Restores Minerals, 3-Layer Replacement Filter --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/70011705-ispring-us31-under-sink-water-system-nsf-certified-3-stage](https://www.desertcart.vn/products/70011705-ispring-us31-under-sink-water-system-nsf-certified-3-stage) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-21*